measuring tape IO speed

From: Kevin Fleming (kevin@w617.com)
Date: Thu Dec 11 2003 - 05:12:15 EST

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since iostat doesn't allow the option of measuring IO speeds to a tape
device - how can it be measured.

I'm looking to indepedantly test IO performance - so the possibility of
using dd is limited. One option is to

dd if=/dev/zero of=/dev/tape/tape0 count=5000 bs=128k

or if=/dev/random, then workout the transfer rate per second, however would
like the same kind of output as iostat.

thanks,
Kevin

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